Science & Mathematics - 5 February 2007

...at the same time from towns 288 miles apart and met in three hours. The rate of one train was six miles per hour slower than that of the other train. Find the rate of each train.

2007-02-05 15:46:52 · 10 answers · asked by Anonymous in Mathematics

in equilibrium? Let w1 = 120 N and w2 = 59.0 N
b)What coefficient of static friction between the 120 N block and the table ensures equilibrium?
c)If the coefficient of kinetic friction between the 120 N block and the table is 0.295, what hanging weight should replace the 59.0 N weight to allow the system to move at a constant speed once it is set in motion?

Need help on this on guys, been working on for hours- thanks

2007-02-05 15:46:39 · 1 answers · asked by cosmo 1 in Physics

What math would I have to use to figure out how to build one accounting for tissue, bolsa wood

2007-02-05 15:46:03 · 1 answers · asked by Anonymous in Mathematics

2007-02-05 15:45:54 · 10 answers · asked by Anonymous in Weather

In South America There is a tree that people use to burn , because of its fragance, and it keeps bugs away. its name is Bursera graveolens, also known as holy wood. Anyone knows anywhere in the US that I could buy it???

2007-02-05 15:45:44 · 1 answers · asked by Kitiara_DSev 2 in Botany

And if so, at what salt concentration do we use to enrich the medium to grow it?

2007-02-05 15:42:29 · 1 answers · asked by Who_am_i 1 in Biology

Between the amino acids histidine, glutamic acid, threonine, and leucine, which is:
-most likely to be folded up in a protein that is generally in an aqueous solution?
-most likely to bind to cations?
Thank you!

2007-02-05 15:41:48 · 1 answers · asked by asthenia394 2 in Chemistry

2007-02-05 15:39:39 · 13 answers · asked by max g 1 in Weather

2007-02-05 15:39:14 · 8 answers · asked by gosala a 1 in Biology

Where can I find an organization where I can voulnteer to help with sea life such as; seals, whales, dolphins, etc...?? I'm very interested in helping the hopeless animals.

2007-02-05 15:38:12 · 1 answers · asked by Christalyn P 2 in Zoology

That it's possible to die from excessive consumption of it and that most people are exposed to it on a daily basis. Anyone know anything about this substance?

2007-02-05 15:38:09 · 5 answers · asked by alfie 2 in Chemistry

2007-02-05 15:37:18 · 5 answers · asked by gosala a 1 in Biology

2007-02-05 15:36:36 · 2 answers · asked by laura t 1 in Engineering

2007-02-05 15:35:59 · 6 answers · asked by gosala a 1 in Biology

2007-02-05 15:34:44 · 7 answers · asked by Shawn Z 1 in Mathematics

2007-02-05 15:34:24 · 3 answers · asked by gosala a 1 in Biology

I NEED TO BUY FLOOR PANELS AND EACH PACKAGE COVERS 1.60 SQUARE METERS. HOW MANY BOXES DO I NEED TO BUY FOR LIVING ROOM THAT IS 8X7 METERS. PLEASE HELP I AM SOOOOOO LOST IN MATH.

2007-02-05 15:31:59 · 10 answers · asked by Anonymous in Mathematics

2007-02-05 15:31:37 · 46 answers · asked by *Ruffian* 3 in Physics

Factor this with explanation: -4x^4 + 8x^3 - 16x^2 + 32x

2007-02-05 15:31:14 · 3 answers · asked by 511@ 4 in Mathematics

2007-02-05 15:30:43 · 2 answers · asked by 2 2 1 in Chemistry

For which of the following functions f and corresponding #s a is the limit the value of f' (a)?
lim (1+h)^8-1 / h
h->0

A) f(x)= x^8, a =0
B) f(x)= (x-1)^8, a =1
C) f(x)=(x+1) ^8, a =8
D) f(x)= x^8, a=1
E) f(x)= (x+1)^8, a =1
F) f(x)= x^8, a=8

2007-02-05 15:30:22 · 3 answers · asked by Anonymous in Mathematics

if 2 nickels equaled a quarter,,how many quarters would i need to make a dollar..then i lost a dime that was worth 4 nickels and had to replace it with quarters..

2007-02-05 15:29:08 · 3 answers · asked by David M 2 in Mathematics

2007-02-05 15:26:37 · 7 answers · asked by Anonymous in Zoology

?

2007-02-05 15:25:52 · 4 answers · asked by Anonymous in Chemistry

2007-02-05 15:25:35 · 2 answers · asked by Anonymous in Mathematics

2007-02-05 15:24:08 · 2 answers · asked by AaSHEK 4 in Mathematics

If not, has it been speeding up or slowing down?

2007-02-05 15:24:04 · 9 answers · asked by Guelph 5 in Astronomy & Space

2007-02-05 15:23:36 · 5 answers · asked by urrrp 6 in Zoology

In North America, it seems that rivers flow towards the south, or towards the equator.

So does that mean that the rivers in South America flow north, also towards the equator?

2007-02-05 15:22:30 · 17 answers · asked by Kristy 1 in Geography

What do you think would happen if the blood supply to bone tissue was reduced?

2007-02-05 15:22:24 · 1 answers · asked by Anonymous in Medicine